: This marks the first appearance of Katelyn Tarver as Jo, who eventually becomes Kendall's primary love interest.
: Kendall, Logan, and Carlos all compete for Jo's attention, leading to internal tension within the band for the first time. [S1E5] Big Time Love Song
James suffers an allergic reaction to a body spray, leading to a fear-driven subplot about getting an allergy shot from "Doctor Hollywood". : This marks the first appearance of Katelyn